Exercises:

1. We'll have to finish the job,＿＿＿＿＿.
A、long it takes however
B、it takes however long
C、long however it takes
D、however long it takes
2. “I wish you would just forget about it.”
“I can’t. I want to know ______ she said about us.”
A、that
B、when
C、what
D、it
3. _____ progress helps to relieve scarcities(紧俏物资)is a fact accepted by all economists.
A、Technological
B、That technological
C、Although technological
D、There is technological
4. _____ surprises many youngsters.
A、Butterflies are insects
B、Butterflies being insects
C、The fact that butterflies as insects
D、The fact that butterflies are insects
5. He didn’t live up to _____ had been expected of him.
A、what
B、which
C、that
D、all what
6. _____ some mammals came to live in the sea is not known.
A、Which
B、Since
C、Although
D、How
7. _____ the drought in Kansas has become less serious .
A、It is apparently that
B、It appears that
C、It must have been that
D、There is appearance that
8. The mere fact _____ most people believe nuclear war would be madness does not mean that it will not occur.
A、what
B、which
C、that
D、why
9. _____ is interested in the job may apply for it.
A、Who
B、Whomever
C、Whoever
D、He that
10. _____ was not our concern.
A、If or not he might pass the examination
B、Whether he passed the examination or not
C、However he might pass the examination
D、Though he might pass the examination
11. You should make it a rule to leave things＿＿＿＿＿you can find them again
A、when
B、where
C、then
D、there
12. Can you make sure ______ the gold ring?
A、where Alice had put
B、where did Alice put
C、where Alice has put
D、where has Alice put
13. By success I don't mean ____ usually thought of when that word is used.
A、what is
B、that we
C、as you
D、all is
14. --We haven't heard from Jane a long time.
--What do you suppose _____ to her?
A、was happening
B、has happened
C、to happen
D、having happened
15. Go and get your coat. It's _____you left it.
A、there
B、where
C、there where
D、where there
16. When I try to understand ____ that prevents so many Americans from being as one might expect it seems to me that there are two causes.
A、why it does
B、what it does
C、what it is
D、why it is
17. Mother will wait for him to have dinner together. ______
A、However late is he
B、However he is late
C、However is he late
D、However late he is
18. --Do you remember _____ he came?
--Yes, I do . He came by car.
A、how
B、when
C、that
D、it
19. ______she couldn't understand was _______ fewer and fewer students showed interest in her lesson.
A、What , why
B、That , what
C、What , because
D、Why , that
20. After the war, a new school building was put up ________there had once been a theatre.
A、that
B、where
C、which
D、when